All kinds of variables in natural and social sciences are normally or approximately normally distributed. Height, birth weight, reading ability, job satisfaction, or SAT scores are … See more

Normal distributions have key characteristics that are easy to spot in graphs: 1. The mean, … See more

The empirical rule, or the 68-95-99.7 rule, tells you where most of your values lie in a normal distribution: 1. Around 68% of values are within 1 standard deviation from the mean. … See more

The central limit theoremis the basis for how normal distributions work in statistics. In research, to get a good idea of apopulation mean, ideally you’d collect data from multipl… See more